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Night had fallen, but the aurora still gave her changing light; and as we felt the first oscillations of the rolling breakers, Black took a long look behind him to his Arctic home.
They pretend that value, ever varying, can never be determined. This is like maintaining that, given the number of oscillations of a pendulum per second, their amplitude, and the latitude and elevation of the spot where the experiment is performed, the length of the pendulum cannot be determined because the pendulum is in motion. Such is political economy's first article of faith.
Nearly three hours are occupied by oscillations which mutually annul one another. The Mouse does not cross the little sand-hill heaped about it by the rakes of the workers. For the second time a male emerges and makes a round of exploration. A bore is made in workable earth, close beside the brick.
In the first part of this book we learned about spark-gap telegraph sets and how the oscillations they set up are damped and the waves they send out are periodic. In this and the next chapter we shall find out how vacuum tube telegraph transmitters are made and how they set up oscillations that are sustained and radiate waves that are continuous.
At the moment of the observation of noon the oscillations of the horizon, crossed by streaks or black bands of very variable size, produced changes of refraction from 3 to 4 degrees. The sea became rough in very calm weather and everything announced a stormy passage between Cayman Island and Cape St. Antonio.
As the paper moves over the pulleys a delicate hair line is marked, straight when the siphon is stationary, but curved when the siphon is pulled from side to side by the oscillations of the signal coil. It is to the mouse-mill that me must look both for the electricity which is used to electrify the ink and for the motive power which drives the paper.
While no sound can be heard in the headphones at the receiving station so long as the points of the key are not in contact, when they are in contact the oscillations are modulated and sounds are heard in the headphones that correspond to the frequency of the buzzer in the key circuit. The Operation of C. W. Telegraph Transmitters with Direct Current.
The latter is then made to flow through a vacuum tube oscillator when it is converted into high frequency oscillations and these are varied, or modulated, as it is called, by a microphone transmitter such as is used for ordinary wire telephony. The energy of these sustained modulated oscillations is then radiated into space from the aerial in the form of electric waves.
All geological facts tell us plainly that each area has undergone numerous slow oscillations of level, and apparently these oscillations have affected wide spaces.
At the present moment, Europe, weary of war and discussion, awaits a reconciling principle; and it is the vague perception of this situation which induces the Academy of Moral and Political Sciences to ask, "What are the general facts which govern the relations of profits to wages and determine their oscillations?" in other words, what are the most salient episodes and the most remarkable phases of the war between labor and capital?
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